About
Arnica montana is a perennial that forms clumps and features a rosette of broad, oval leaves that can reach lengths of up to 15 cm. During the summer months, it blooms with vibrant yellow to orange-yellow flowers, each measuring between 5 and 8 cm in diameter.
About the genus
Arnica consists of rhizomatous perennials characterized by their simple, opposite leaves and yellow, daisy-like flowers that can appear either alone or in loose clusters during the summer months.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- West-facing, South-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Bushy
- Foliage
- Deciduous
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Wildlife gardens
- Native to
- C & N Europe
- Toxicity
- Harmful if eaten, skin allergen. Wear gloves and other protective equipment when handling
Care notes
- Cultivation
- Grow in moist but well-drained, humus-rich soil in a sunny position
- Pruning
- Cut down stems once flowering is finished
- Propagation
- Propagate by seed sown in a cold frame in autumn, or by division in spring
- Pest resistance
- May be susceptible to caterpillars and slugs
- Disease resistance
- Generally disease-free